刚性弓网系统参数对接触线波磨的影响研究

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摘要建立地铁受电弓-刚性接触网1:1有限元摩擦自激振动模型，通过滑动摩擦关系将弓网系统的法向和切向运动进行动力学耦合。基于摩擦自激振动引起波磨理论，使用复特征值法研究刚性弓网系统参数对接触线波磨的影响。结果表明，当摩擦系数μ≥0.15时，刚性弓网系统都会在频率ƒ=818.01Hz发生摩擦自激振动现象，这个摩擦自激振动引起刚性接触线波磨。当摩擦系数μ＜0.15时，可以显著减轻接触线波磨；当法向接触力F≤110N或跨距L=6m时，可以有效缓解接触线波磨；当弓头悬挂扭簧刚度K=100N•m/rad时，接触线波磨发生的可能性较小。

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	李先航1
	陈光雄1
	梅桂明2
	何俊华1
	刘达毅1
	冯晓航1

关键词 ：接触线波磨, 摩擦自激振动, 刚性接触网, 复特征值

Abstract：A full-size finite element model of a pantograph-rigid catenary system was established, and the normal and tangential motions of the pantograph-rigid catenary system were dynamically coupled by sliding friction. Based on the theory of the friction-induced self-excited vibration causing corrugation, the effects of pantograph-rigid catenary system parameters on the contact wire corrugation were studied by using the complex eigenvalue method. The results show that when the friction coefficient μ≥0.15, the friction-induced self-excited vibration occurs at a frequency ƒ=818.01Hz, and this friction-induced self-excited vibration causes rigid contact wire corrugation. When the friction coefficient μ＜0.15, the contact wire corrugation can be significantly reduced. When the normal contact force F≤110N or the span L=6m, the contact wire corrugation can be effectively alleviated. When the stiffness of the pantograph-head suspension torsion spring K=100N•m/rad, contact wire corrugation can be suppressed.

Key words： contact wire corrugation friction-induced self-excited vibration rigid catenary complex eigenvalue

收稿日期: 2021-10-21 出版日期: 2023-03-15

引用本文:

李先航1，陈光雄1，梅桂明2，何俊华1，刘达毅1，冯晓航1. 刚性弓网系统参数对接触线波磨的影响研究[J]. 振动与冲击, 2023, 42(5): 122-135.
LI Xianhang1, CHEN Guangxiong1, MEI Guiming2, HE Junhua1, LIU Dayi1, FENG Xiaohang1. Effects of pantograph-rigid catenary system parameters on contact wire corrugation. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(5): 122-135.

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http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I5/122

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